NTP Port Number and Configuration Tutorial For Linux Local
Ubuntu - UDP Traffic on port 123 - Unix & Linux Stack Exchange UDP port 123 is the default NTP port. So check your NTP configuration. The most probably it's standard synchronization. You'd have to capture packets with tcpdump and inspect the content (wireshark). iptables - ubuntu: open udp port 123 - Server Fault into my linux server (Ubuntu 8) I have top open the port 123 for ntp. I have write this into /etc/iptables.rules::INPUT ACCEPT [7496:9080183] :FORWARD ACCEPT [0:0] :OUTPUT ACCEPT [4393:322232] [0:0] -A INPUT -p udp -m udp --sport 8100 -j ACCEPT [0:0] -A INPUT -p udp -m udp --dport 8100 -j ACCEPT [0:0] -I INPUT -p udp --dport 123 -j ACCEPT [0:0] -I OUTPUT -p udp --sport 123 -j … TCP and UDP ports used by Apple software products Aug 27, 2019 UDP Port Scanner, Online UDP Port Scan, UDP Port Scanning
How to check UDP port status open or not. - Open Port
Opening UDP port 123 - Cisco Community
How to check if UDP port 123 is open? How to test this
UDP Scan (-sU) | Nmap Network Scanning UDP scan works by sending a UDP packet to every targeted port. For most ports, this packet will be empty (no payload), but for a few of the more common ports a protocol-specific payload will be sent. Based on the response, or lack thereof, the port is assigned to one of four states, as shown in Table 5.3 . networking - How to check if port 123 is ready for time